Results 81 to 90 of about 30,052 (263)
Advanced Functional Materials, EarlyView.A low‐Pt catalyst supported on zeolitic imidazolate framework (ZIF‐8)‐derived porous carbon and graphite is integrated with a halide perovskite photovoltaic, yielding cathodes that achieve a high photocurrent density (∼20 mA cm−2) under simulated sunlight and exhibit remarkable stability in acidic media over several days, thereby demonstrating a ...
Na Yeong Oh +12 more
wiley +1 more source
Black hole entropy and quantum information [PDF]
, 2008 We review some recently established connections between the mathematics of black hole entropy in string theory and that of multipartite entanglement in quantum information theory.
Ferrara, S, Duff, MJ
core +1 more source
The averaged null energy condition and the black hole interior in string theory
Nuclear Physics B, 2019 Recently it was shown that folded strings are spontaneously created behind the horizon of the SL(2,R)k/U(1) black hole. Here we show that these folded strings violate the averaged null energy condition macroscopically. We discuss possible consequences of
Karinne Attali, Nissan Itzhaki
doaj +1 more source
Charge Generation and Recombination Pathways in All‐Polymer Bulk Heterojunction Solar Cells
Advanced Functional Materials, EarlyView.Multimodal spectroscopy and device analysis reveal how field‐dependent charge generation, transport limitations, and non‐geminate recombination govern performance losses in all polymer solar cells. The results identify the key processes controlling charge extraction and recombination, providing insights for the design of more efficient all‐polymer ...
Shahidul Alam +17 more
wiley +1 more source
Black hole physics beyond the black hole spacetimes [PDF]
, 2002 Different results of black hole physics can also be obtained in spacetimes having horizons.
Ahmed, M
core
Massive charged quasinormal modes of a Reissner-Nordstrom black hole [PDF]
, 2007 Using the WKB method and HYBRD program, we evaluate the low-lying massive charged scalar and Dirac field quasinormal modes (QNMs) of a Reissner-Nordstrom black hole.
Shen, Y. G., Chang, J. F.
core +1 more source
On the origin of black hole paradoxes
Nuclear Physics BBlack hole firewall paradox is an inconsistency between four postulates in black hole physics: (1) the unitary evolution in quantum systems, (2) application of the semi-classical field theory in low curvature backgrounds, (3) statistical mechanical ...
Kamal Hajian
doaj +1 more source
Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges
Advanced Functional Materials, EarlyView.This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu +9 more
wiley +1 more source
Fermion entropy of Vaidya-Bonner black hole [PDF]
, 2001 Using the membrane model which is based on the brick-wall model, we have calculated the free energy and entropy of the Vaidya-Bonner black hole due to fermion fields.
Gao, CJ, Shen, YG
core
, 2019 We show that in asymptotically free mimetic gravity with limiting curvature the black hole singularity can be resolved and replaced by a static patch of de Sitter space.
Chamseddine, Ali H. +2 more
core +1 more source